The interview arrives ahead of his new blues album ‘Orgy Of The Damned’
The moment occurred during the final night of the rock icons' tour
The collaborative record will be released the benefit the Teenage Cancer Trust
Steven Tyler plays harmonica on Slash's and Johnson's cover of Howlin' Wolf's 'Killing Floor'
Funds raised from the re-recording of his 1983 solo hit will be donated to cancer charities
Also featuring Slash, Margot Robbie, Greta Gerwig, Emma Stone and more
The Guns N' Roses guitarist also shared lead single 'Killing Floor' with AC/DC's Brian Johnson and Aerosmith's Steven Tyler
Also featuring on the album are Rufus Wainwright, System Of A Down's Serj Tankian and many others
The band have been eligible since 2002, but have only just earned their first nomination
It is the latest single from the band's upcoming album 'Rockmaker'